PMM Titanium Sig Sauer MCX .300 Blackout Piston

SKU:

$125.00

$125.00

Unavailable

PMM has discovered that Sig Sauer MCX rifles chambered in 300 Blackout are often prone to failures to function. This is the result of dimension variances with the rifle's factory piston which under-gasses the MCX's system.

PMM has redesigned the piston with tighter tolerances to ensure reliable function in semi-auto and full-auto rifles. The new PMM Titanium MCX 300 Blackout piston is manufactured from G5 Titanium, creating a more durable piston that is 50% lighter than the Sig Sauer piston.

If you are experiencing function problems with your rifle, or are looking for a way to save weight and enhance your rifle's durability, then order a MCX piston from PMM.

Sig Sauer MCX Piston - Weighs approximately 0.75 ouncesPMM Titanium MCX Piston - Weighs approximately 0.37 ounces​PLEASE NOTE: The PMM Titanium .300 BLK piston is intended to be used with a Factory SIG SAUER 16" barrel that has been cut to 9" As the gas block is in a differnt location. This piston WILL NOT WORK with the Factory 9" & 6.75" Barrels​NOTE-If you are having a barrel shortened by PMM, you may need to order one of these pistons to ensure that your rifle is receiving enough gas from the 300 Blackout round to properly cycle the bolt carrier. PMM will always contact you after shortening your barrel if we discover that your factory MCX piston is not reliably cycling the bolt carrier.